Feed-water heater



(N0 Model.)

B. R. STILWELL.

FEED WATER HEATER. No. 278.196 Patented May 22,1883.

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PATENT OFFIC EDWIN: rt. STIL-WELL, or DAYTON, 01-110.

FEED-WATER HEATER.

SPECIiICATION forming" part of Letters Patent No. 278,196, datedhMayApplication filed February 24, 1883. (No model.)

To all whom it may concern:

Be it known that I, EDWIN R. STILWELL, a

. citizen of the United States, and a resident of Dayton, in the countyof Montgomery and State of Ohio, have invented certain new and usefulImprovementsin Feed-Water Heaters, of which the following is aspecification.

My invention relates to an improvement in feed-water heaters-andpurifiers.

One object of my invention is to provide a device which will utilize atthe same time the escape-steam and employ livesteam for further heatingthe feed-water for purification and supplying the boiler with purifiedhot feed-water.

Another object of myinvention is to so connect the parts with the boilerand engine that either the live or escape steam may be used alone, ifdesired.

In' the annexed drawing and description thereof I have shown 'anddescribed the preferred form of constructing theheater and purifier; butvarious modifications may be made thereinas, for instance, thefiltering-purifier may be'made horizontal in place of vertical.

Another object of my invention is, to combine a tubular heater with alime-extractor or water-purifier,the tubular portion of the heaterutilizing exhaust-steam and the heater purify- .ing-chamberemployinglivesteam. It will also be obvious that the exhaust-steam could be utilizedin the purifying-chamber and the live steam empLoyed'in a tubularportion of the heater; but the former is the preferred plan ofoperation. In some classes of water the filtering or mud-depositingvessel or compartment is not essential.

The figure in the annexed drawing represents a central vertical sectionof my improvement attached to the boiler.

A represents an ordinary boiler; B, asteamdome, and C a mud-drum.

D represents a compound tubular and limeextracting heater.

1) represents a diaphragm separating the tubular fromthepurifying-heater.

E represents the tubular heater, which is preferably made of acylindrical shell, having flanges d, by which it is joined to similarflanges of the purifying-heater shell H.

G represents a series of tubes rigidly connected to heads 9 g.

E represents a steam-chamber underneath the tubular heater, and isdivided into two compartments by partition 6.

F represents a dome or space above the tubes G. r

. I represents a cold-water-supply pipe.

The operation of this portion of my device is as follows: The feed-wateris admitted by pipe Iinto the chamber 1 and occupies the space aroundand between the tubes G. Steam is admittedinto chamber E,passin g upthrough one half of the series of tubes G into-dome'F,

tubes G, and exhausting out through the chamber E. It is not essentialthat the tubes G be equally divided into two sections, as in practicechamber E and the tubes opening into it may be greater than the exhaustportion of the tubular heater.

H represents the sediment-depositing portion of my heater; 0, a seriesof shelves or other suitable depositing-surfaces.

K represents the water-supply pipe, leading from chamber 1 tooverflow-space L, above shelves 0; M M M, the preferred form ofemploying live-steam heating-pipes. The'pipe M is provided with a cock,m, for cutting oft com inunication between the boiler and purifier whenit is desired to use the waste steam from the engine only as a heatingmedium.

J represents a filter-chamber, which is connected by-pipeN to space 0,under pan 0, and is provided with a vertical passage to the bottom ofthe chamber Q, from whence it flows thence down the other portion'of theseries of I upward through filtering material R, thence through pipe Tinto the boiler.

V represents a pipe for conducting gases from space L into the dome ofthe boiler, and is claimed in a former patent granted me, and it is nota feature of my claims herein. forms of filter-chamber maybe employed;but the upward filteris the best, as the mud may be readily expelledthrough blow-ofl' S. The pipe T- may be connected to the boiler directinstead of to the mud-drum G, which is not essential with my heater andpurifier.

The operation of the upper portion of my heater is as follows: The wateris forced'from chamber 1 through. pipe K into overflowspace L, thenceover the series of shelves 0,

where it receives additional heat from steam Other supplied by pipes MM, passing into space 0, below the shelves, and then. through the filterintothe boiler. The overflow-pipe K might be placed on the outside toconnect.

accomplishes the work of heating and purif ying the feed-water thancould be done by either alone. At the same time, in case of accident toone the othercould still be used.

l. In a feed-water heater for boilers, the combination of the heater E,containing the tubes G, and chamber I,surrouuding thetubes, forreceiving the feed-water, said heater being adapted to receive exhaust-steam at its bottom, with the purifier H, connected with the boilerand containing the sediment-depositing surfaces 0, said purifier beingin communication with the heater to receive the feed-water therefrom,substantially as described.

2. lhe tubular heater E and purifying-heater -H, separated by diaphragmD, and pipe K, connecting the chamber 1' with the space L above theshelves 0, substantially as herein set-forth.

3. In a feedwater heater for boilers, the heaterE, composed of theseparated bottom chambers,'E E, the tubes G, and the chamber 1, having apipe, I, for receiving the feedwater, in combination with the purifierH, connected with the boiler and the heater E, and containing thesediment-depositing surfaces 0, and a filter connected with the purifierby a pipe, N, substantially as described.

4. In a feed-water heater, the combination of the feed-water heater E,composed of tubes G, and receiving exhaust-steam, and the auxiliaryheater and purifier H, in communication with the boiler and the heaterE, and containing the sedimentrdepositing surfaces c,with a filter, J,located between the heaters and the boiler and connected with the heaterand purifier H by a pipe, N, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing wit- 7 nesses.

EDWIN R. STILWELL. Witnesses: O. M. GOTTSGHALL, FRANK S. BREENE.

